Hoist



y 12 1927' c. c. HANSEN HOIST Filed Sept. 23 1926 IN VEN TOR ///5 ATYORNEY Patented July .12, 1921.

A Uuiren srarrzs PATENT eeeiee.

CHARLES C. HANSEN, F EASTO N, PENNSYLVANIA, ASSIGNOR TO INGERSOLL-RAND COMPANY, OF JERSEY CITY, NEW JERSEY, ACORPGRATION OF NEW JERSEY.

HOIST.

Application filed September 23, 1926. Serial No. 137,299.

This invention relates to hoists and more particularly to hand operated winches.

An object of this invention is to prevent disengagement of the handle of the winch 3 while pressure is being applied to the handle. Another object is to prevent accidental re-engagcment of the handle with the driving shaft. Other objects of the invention will be in part obvious and in part pointed out hereinafter.

In the drawing in which similar reference characters refer to similar parts,

Figure 1 is a side view partly in longi tudinal section of a winch constructed in accordance with the practice of the invention, and y c Figure 2 is an end View of the winch taken from the handle end.

Referring to the drawing, the winch comprises a shaft A suitably journaled in a frame or base b. A pinion C keyed to the shaft A is adapted to enga 'e a gear D keyed to a counter-shaft E provided at its opposite end with a gear F meshing with a'larger gear G mounted on the drum shaft'H. A drum J keyed to the shaft H is thus adapted to be driven at reduced speed and cone spondingly increased torque by shaft A.

The winch illustrated is adapted for raising weights by means of the suitable rope (not shown) wound on the drum J and for permitting the weight to descend by gravity. To this end there is provided a brake in the form of a band K encircling a brake drum L keyed or otherwise suitably attached to the shaft A. The brake band K isfixed at one end to a pivot bolt 0, screwed into the frame B. On the opposite end the brake band K is attached to a brake lever handle P pivoted on the bolt 0. For the purpose of providing great tension on the brake band K the point of attachment Q, of the brake band to the lever P is preferably relatively close to the pivot bolt 0. The lever P is provided with a grip end B at an end opposite with respect to the pivot bolt 0 attached at its fixed end to a bolt T of theframe B.

The winch is provided with a ratchet ring U bolted to the rope drum J adapted to be engaged by a pawl V pivotally mounted as by means of a bolt WV supported by an upwardly extending arm X ofthe frame B.

The pawl V is held in or out of engagement by means of a coil spring Y attached as at Z to the frame B and engaging a handle Z) formed integrally with the pawl V. The handle 6 extends over the pivot bolt V with respect to the point of attachment Z of the spring Y to the frame B so that th pawl V is snapped and held in both its engaging and disengaging positions. A

The shaft A is adapted tobe manually operated by means of a crank c. It is at times convenient to disengage the crank c and es pecially so when the rope (not shown) is be ing unwound from the drum J and being retarded by the brake controlled by the brake lever handle P. To this end the brake drum L is provided with a flange (Z extend ing outwardly in the form of a hand wheel,

the flange d being notched as at e to receive the handle 0. At the notch e the flange d is formed with a'pair of lugs f extending toward each other and partially closing the notch e leaving just suflicient space to remove the handle 0. The handle 0 is free to rotate on the shaft A, there being merely a .pin 9 on the shaft A to prevent the removal of the handle from the shaft. 1

To operate the winch by hand the handle c'is pushed inwardly at the shaft A and into the space between the lugs F into the notch E. Upon turning the handle 0 the lugs prevent the removal of the handle 0 from the notch 6 except when there is no tension on the drum J to provide resistance to turning of the handle 0. The handle 0 may, however, be removed from the notch e between the lugs f when the pawl V is in engagement with the ratchet ring U. Furthermore, engagement of the] handle 0 is impossible while the flange d of the hand wheel is revolving because of the slight space between the lugs f. The'shaft A may be rotated, if desired, by means of the hand wheel formed by the flange d if the load at the drum J is light.

Thus by the above construction are ac- I complished, among others, the object hereinhefore referred to.

I claim: A winch comprising a drive shaft, 21 han- 5 dle mounted on said drive shaft and free to move longitudinally thereof, a brake drum connected to said drive shaft having a flange forming a hand wheel, said flange being notched to receive said handle and provided with a pair of lugs extending toward each other and partly inclosing said notch.

In testimony whereof I have signed this specification.

CHARLES C. HANSEN. 

